The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2022
Filed:
May. 30, 2018
Nitto Denko Corporation, Ibaraki, JP;
Tao Gu, Carlsbad, CA (US);
Shimpei Yakuwa, Ibaraki, JP;
Kou Uemura, Ibaraki, JP;
Shunji Imamura, Ibaraki, JP;
Tomoyuki Kasagi, Ibaraki, JP;
Tao Gu, Carlsbad, CA (US);
NITTO DENKO CORPORATION, Osaka, JP;
Other;
Abstract
Provided is a composite material that shows a low specific dielectric constant, and that hardly causes an appearance failure or changes in characteristics when exposed to, for example, a treatment liquid to be used in the production of an electronic circuit board. Specifically, a plate-like composite material including polytetrafluoroethylene and a predetermined filler, and satisfying a predetermined condition serves as a composite material that shows a low specific dielectric constant, and that hardly causes an appearance failure or changes in characteristics even when exposed to, for example, a treatment liquid to be used in the production of an electronic circuit board.